Yes, since Sunday evening. He was ill since Friday after the appointment and hid that from us until we'd been at home a while. They said he was severely dehyrdrated for one, though they've fixed that, and are working on....those things that come in the sports drinks you insisted Enjolras drink if he was not going to eat often. And then controlling the pain enough that he can come home and we can determine how to keep them from happening.
They've been rather severe since we arrived here, after all. They say that stress levels can do that. I admit I've been responsible for SOME of that, but they think there is much more of an underlying cause. It...yes, the problem IS with his brain, actually, but..not in the same way something like a growth would be.
It's terrible and they have no cure but time and prevention for this, but at least it is not going to kill him and it CAN be controlled. Eventually.
Of course we did not want to tell you. You would have done what you are doing now, and stressing yourself and that's hardly good. You have enough to get on with as it is, without adding that until we knew more.